Filter



(NoModel.)

J. E. WARREN FILTER.

No. 404,236. Patented May 28, 1889.

N. PETERS. Phnwumugmpher. wnmngmn. D. cv

FFlCE.

JOHN E. VARREN, OF CUMBERLAND MILLS, ASSIGNOR TO THE CUMBER- LAND MANUFACTURING COMPANY, OF PORTLAND, MAINE.

FILTER.

SPECIFICATION forming part of Letters Patent No. 404,286, dated May 28, 1889.

Application filed October S, 1888. Serial No. 287,068. (No model.)

To all whom, t may concern.-

Be it known that I, JOHN E. VARREN, of

' Cumberland Mills, county of Cumberland,

State of Maine, have invented an Improve ment in Filters, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to filters, and is an improvement upon the filter shown and described in another application, Serial No. 257,296,filed by me December 8, 1887; and my invention has forits object to improve the construction of the said filter, so that the foreign or sedimentary matter held in suspension by the fluid-usually water-may be more effectually removed therefrom and from the filter.

The particular features in which my invention consists will be pointed out in the claims at the end of this specification.

Figure l is a vertical section of a filter embodying my invention, and Fig. 2 a detail in elevation to show the driving mechanism.

The tank or vessel A, which may be of any desired capacity, is divided, as herein shown, by upright walls A', into a central chamber, of, and an annular space divided into chambers d cby substantially diametrically-opposite walls. (Not shown.) The chamber d contains within it the filtering-bed a4, of sand or other granular or usual material, which is supported, as shown, upon a perforated metal plate, Z), resting upon suitable slats or beams b. The chamber a also contains Within it a hollow pipe or casting forming a well, b2, for the reception of water and sedimentary matter, the said pipe or casting being sustained, is shown, by the bottom of the cistern and Xtended up through the filter-bed, its upper im or edge being substantially level with the top or upper surface of the filter-bed.

The well b2 has extended through it a pipe, b, constituting the inlet-pipe for the filter, the said pipe communicating with the chamber a of the filter and having its inlet-mouth controlled by a gate or valve, b5, herein shown as operated through a valve-rod, h, and wheel 197 from above the filter, the chamber a', as

shown, constituting the inlet-chamber for the filter. The well b2 'y provided with a suitable discharge-pipe, c, (see dotted lines, Fig. 1,) by which the water and sediment in the said well may be discharged therefron'l, the said pipe being controlled by a suitable valve, (not shown,) but which may be operated through the rod c and wheel c2.

The chamber a, below the filter-bed, is provided with a suitable outlet-pipe, c3, herein shown as discharging the filtered water from the said chamber into the chamber a2, which constitutes the outlet-chamber for the filter, the discharge of filtered water from the chamber a into the chamber a2 being' controlled by a gate or valve, c4, operated through the rod c5 and wheel c, the water in the chamber u? passing therefrom through a suitable outlet. (Not shown.)

The inlet-pipe h4, as shown, is extended above the well, and has secured vto it, as by setfscrews d, a casting composed essentially of a hub, d', and radial arms d2, between which arms the water is discharged from the inlet-pipe into the chamber c. The hub d forms a guide for a vertically-movable shaft, d3, extended above the filter, and supported in suitable bearings in a bracket or standard, d4, sustained, as shown, by the crossbeam d5. The shaft d3 has firmly secured to it an agitator composed, as herein shown, of the arms c 5, provided with fingers dl, preferably connected together at their lower ends or points bya sweep or blade, d8, secured to the said fingers so as to incline toward the filter-bed. The shaft d3 has splined upon it a bevel gear-wheel, c, through which rotation is imparted to the agitator to stir up or agitate the filter-bed when the ngers Z7 are inserted therein, as will be described. The bevel-gear e is rotated by a bevel-pinion, cx, on a shaft, e', provided with fast and loose pulleys e2 c3, the said shaft being supported in suitable bearings in a frame, c4, sustained by the tank 0r vessel. The upper end of the shaft d3 is provided with screw-threads f, to engage threads on the inner side of the hub of a bevel-gear, f', rotated by a pinion, f2, on a shaft, f3, provided, as shown, with clutchpulleys f4 f5, connected by belts f6 f7 to pulleys fs f9 on the shaft e.

The shaft f3 is made screw-threaded for a portion of its lei'lgth, as shown, and has IOO mountedA upon it a threaded sleeve or hub,

f1", having an arnnjlf, through Ywhieh. is extended a rod, g, provided on opposite sides ot the arm with eollars or tappets g g2, the said 5 rod having seeured to it the eluteh h1", ol' any usual or well-known eonstruetion, the meeh anism just deseribed constituting an automatie stop mechanism, by whieh the dire@- tion ot travel of the movable shaft maybe controlled.

ln the operation of my improved tilter the water or other iluid to be filtered is discharged into the Chamber a through the inlet-pipe il", the said water lilling the well b2 and the Chamber above the tilter-bed, asindicated by broken lines, the disehargepipe c for the well being elosed. rlhe water passes through the Vfilter-bed and into the outletehamber u?, the valve e1 being open. ln praetiee it has been ascertained that the lighter impure particles gravitate toward the CenterI oi the `filter-bed, and with my improved iilter these lighter impure partieles precipitate to the bottom of the well, while the heavier im pure partieles, whieh gravitate toward the walls oi.' the ehaml'ier u., are collected by a peripheral glitter, 7l., from whenee they are eendueted to the eentral well by pipes 7L.

The eentral well and peripheral gutter are espeeially advantageous when it is desired to wash the filter-bed, as they ailiord a rapid egress tor the contaminated or impure water. During the process of liltration the agitator maybe revolved with the points olil the tingers near but not in eontaet with the filterbed. As the agitator is thus revolved, the sweeps or blades tend to snel; up and keep afloat the sediment and. prevent it settling down upon the iilter-bed. So, also, when the sweep or blade in the iilter-bed and the agitator revolved during the washing of the Iilter-bed, the said sweep or blade ents the filter-bed horizontally and lifts it up, thereby more eliretuallyfreeing it from the adhering sediment.

lt' desired, I may secure two or more sweeps or blades to the fingers on eaeh arm.

rl`he downward travel. or movement of the shat't li lnited by the tappet` arm striking one tappeti, as y', thereby diseng ring the eluteh g hl", ot ordinary eonstrueiion, l lom one pulley, f *l l l We" n"t "tl tl i' llU "1 tl as] ,am engagingl ,nl .1 `iepu ,ey I/ ,n.i( by reversi ng the di reetimr of movement o t' the shalftj and eausing it io aseend, its upward movenwnt being limited b v the tappet-arm outlet, 7:2", Controlled by a suitable valve. (Not shown.)

I Claim.-

l. ln a iilter, a tank or vessel and a iilterbed eontained therein, combined with a well extended up through and below the 'Iilterdwd and elosed at its bottom to reeeive sediment7 and provided with a disehargebntlet through whieh' the sediment in the said well is removed thereirom, and with an inlet-'pipe extended into said well, substantially as and. tor the purpose set forth.

2. ln a iilter, a tank or vessel. and al iilterbed Contained therein, eombined with a well extended through the iilter-bed, and with a peripheral gutter, 71, eonneeted to'said well, substantially as and for the purpose specified.

In a iilter, the eombination, with a tank or vessel and a iilter-bed therein, of a vertieally-moving shaft, d, an agitator secured to said shat't and eonsisting of an arm having lingers, and a sweep or blade seeured to said lingers, and automatie stop meehanism eonsisting ot the threaded sha'ift f, sleeve fl, having an arm, fig, rod g, extended through said arm and provided with eollars on opposite sides oit' said arm, and a eluteh eonneeted to said rod and operated through the said. arm and Collars to prod uee opposite travel oi.' the shat't d, substantially as deseribed.

l. In a filter, the combination, with a tank or vessel and a Iilterbed therein, of a well,

(P, an inlet-pipe extended through said well,

a vertieally-movable shaft, an agitator seen red thereto, and"meehanism, substai'itially as described, to automatically stop or limit the movement ot the said shaft in opposite direetions, substantially as described.

In testimony wlun'eofl havesigned my name to this speeilieation in the preseneeolf two sub seribing witnesses.

TOO 

